'Cryptococcus nyarrowii' sp. nov., a basidiomycetous yeast from Antarctica

Title
'Cryptococcus nyarrowii' sp. nov., a basidiomycetous yeast from Antarctica
Publication Date
2002
Author(s)
Watson, Kenneth
Thomas-Hall, Skye
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Society for General Microbiology
Place of publication
United Kingdom
DOI
10.1099/ijs.0.01940-0
UNE publication id
une:3939
Abstract
In December 1997, 196 soil and snow samples were collected from Vestvold Hills, Davis Base, Antarctica. Two isolates, CBS 8804T (pink colonies) and CBS 8805 (yellow colonies), were shown by proteome analysis and DNA sequencing to represent the same species. Results from the sequencing of the D1/D2 region of the large rDNA subunit placed this species in the hymenomycetous tree in a unique sister clade to the Trichosporonales and the Tremellales. The clade consists of Holtermannia corniformis CBS 6979 and CBS strains 8804T, 8805, 8016, 7712, 7713 and 7743. Morphological and physiological characteristics placed this species in the genus Cryptococcus, with characteristics including the assimilation of D-glucuronate and myo-inositol, no fermentation, positive Diazonium blue B and urease reactions, absence of sexual reproduction and production of starch-like compounds. Fatty acid analysis identified large proportions of polyunsaturated lipids, mainly linoleic (C18:2) and, to a lesser extent, linolenic (C18:3) acids. On the basis of the physiological and phylogenetic data, isolates CBS 8804T and CBS 8805 are described as Cryptococcus nyarrowii sp. nov.
Link
Citation
International Journal of Systematic and Evolutionary Microbiology, v.52, p. 1033-1038
ISSN
1070-6259
1466-5034
1466-5026
Start page
1033
End page
1038

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